Cattman is obviously the best header system for the maxima but thats an insane amount of money, Ive been reading about headers for our cars but havent found too much info...I know the Stone Racing Ypipe has fitment issues but I'm thinking the WHOLE StoneRacing System(headers/Ypipe) would be great, VQ looks to have rated it pretty well, not to mention its cheap.... havent seen to much about HotShot headers either but would love to hear some feedback about them and as well as OBX!...

The OBX system on ebay is pretty cheap and its stainless steel..the kits on Ebay look like they are a bad-azz quality system...I dont get why Tilley said it was junk, someone PLEASE elaborate because the OBX headers look like a great deal??

Would also love to hear about stillen and any other header systems that are made for our cars that Im not aware of ...

LETS DISCUSS PLEASE..THANK YOU VERY MUCH

 

Cattman or Hotshots, whatever your budget allows.

 

yea hotshot looks like a quality system ... looks like they only make it for 02-03's...now does the 02-03' hotshot system work on a 3.5 in a 4th gen...anybody know if it will fit ?

 

If you're not going to get the Cattman or Hotshot headers then you should keep your exhaust manifolds.

 

...........

 

From what I have read they are about the same in HP. I would get HotShot, have the cost. That is what I have.

 

Does anybody know if the 02-03' hotshot headers will work on 3.5 in a 4th gen?? ... crap i wanna know this so bad I would paypal money for the answer .. lol

 

Donate to the site using paypal and you can get the answer by using the search feature.

I know of 1 3.5L equipped A32 with Hotshots.

 

^^ good point...I am gonna donate, been thinkin bout it for a while .. dont know why I never did .... wow thats great to know that there is a 3.5L with hotshot headers in a 4th gen(A32)..NmexMAX, if you knew the sn of the guy who had this set-up, I would G R E A T L Y appreciate the information

 

He's only the quickest NA a33 on the site, u should be able to find him.

 

He hasn't run yet with the Hotshots.
A32 is a 4th gen, and an A33 is a 5th gen.... now you can probably guess what yours is. (6th gen = A34)
Just donate.. it's that easy..

He's online now...

 

I got in touch with Terry .... I love this org ... thanks for all the help guys .. I really appreciate it ... after I get my 3.5 im gonna do some dyno runs with Hotshot headers so everyone can get an idea of how well they stack up against other headers

 

I got confused, the guy I was talking about is running the cattman 3.0 headers.

 

ok, how about getting cattman headers and ypipe kit from CE for a 2002. it should bolt right up and into a cat conv. Right?? I need to get as much info on this(and many other things), cause i will be doing the swap near the end of the summer(aug). The reason i am asking is, it's because i want it to fit properly and not to modify anything and whatever. Ifthere are parts already available for the car, why not get theones that fit right? If i'm wrong, someone please direct me to the right path

 

The cattman headers come with the y pipe. Goes all the way to the cat. The way the headers are made im pretty sure you can't use an aftermarket y pipe.

 

that's what i thought!! So 5th gen cattman headers/y-pipe it is. Might aswell right?? Get something nice and polished and it'll look great under the hood

 

I really hope the 3.5 swap guys will step in here ... heres my dilema .. Terry informed me through a pm that the hotshots fit good but he isnt running an ac compressor .. only other thing is that the headers system sit real close to the car in one spot, i dont care about that .... im going to keep my ac compressor though so will these still fit, anyone know? .. thanks

 

crap better question is what does everyone use for headers for there 3.5 swap in there 4th gen ?

 

Do Hotshot Headers bolt up an aftermarket Y-pipe ??

I know SS autochrome makes a header system and I believe any aftermarket Y-pipe will bolt up like stock. pics:



Say someone were to get rid of my stock headers for something better, and really wanna keep their Brand New 3" y-pipe ? What are their options ?

-matt

 

ALL of these questions have been discussed and answered a few times already. The best thing for you all to do is simply search for the answers. Just use Google if you can't donate.

 

Those paperweights would be your only option. However your car will make more power and sound much better with a real set of headers.

Highest power and best sound: Cattman
Second: Hotshot

The OBX wouldn't be a bad choice if they came with an equal length Y pipe but other than that, everything else is a waste of time and money.

 

So even compaired to stock, those SS Autochrome are pointless to put on a DEK motor ?? I just bought this 3" y-pipe and it would kill to have to dump it already. Wouldnt they flow alot more than stock headers

-matt

 

My vote was for Hotshots. Yes they would fit the 4th gen. This fitment issue is that the way the o2 sensor bong in the front is aimed, the o2 comes VERY close to, if not makes contact with the AC compressor. You can fix that by

#1- taking them to a muffler shot and have them relocated so its aming say towards the driver side, plenty of clearance there.

or

#2- Source out the 3.5 AC compressor mounting braket. If Im not mistaking it would relocate your compressor enough so that the o2 will clear it. Someone correct me if Im wrong.

 

The 3.5 ac bracket is not compatible with the 3.0 compressor. For those doing the swap who keep their ac, the 3.0 compressor and bracket is transferred to the 3.5 block.

 

I would go with choice 1.

 

Invalid poll...No Cattman option FTL.

 

http://forums.maxima.org/showthread.php?t=308934

http://forums.maxima.org/showthread.php?t=265537

 

I just had a new o2 bung put on and capped off the old one

 

im confused how does a shop actually go about changing the o2 sensor location? ... do they actually drill a new whole in the header and then thread it ? and then weld the old one shut? ....

another ?.... what exactly is an o2 simulator and how does it work ? since im pretty much clueless

 

No they would just torch a hole in the pipe and weld a threaded bung in. A threaded plug is screwed into the old location to seal it. The picture below shows two bungs I had added to my header y-pipe for my WB02 and a dyno WB02.



All of the aftermarket header systems for the maxima will eliminate the pre-cats and the bungs for the rear O2 sensors. Although the ecm does not use feedback from the rear sensors for engine control, you will get one or more codes if it does not receive signals in the correct range for both the heater and the O2 sensor signal circuit.

The O2 simulator provides your ecu with a signal that fluctuates in the range of about 0.2 - 0.8 volts. It may be used to replace the sensor portion of your rear O2 sensor(s). Generally the two heater wires on the original O2 sensor(s) must be left connected so the ecu does not throw any O2 sensor heater codes.

 

i choose stock 4th gen manifolds with aftermarket y-pipe, has pretty good flow, and you can do it for about 150 bucks. That'll be my route.

 

thats the cheapest way

 

how much hp gain would you get if you use the 4th gen headers with the y-pipe? would it be around the same as the hotshots header? wat about a true dual exhaust system using the 4th gen headers?

 

I picked these up for our VQ35 Sentra swap..


They bolted up, and the y-pipe put the flange right where it needed to be in the tunnel. I had to make a 12" flanged extension, to make it a bolt-in sollution, but the fitment and quality looks great! You can't tell me that this setup isn't going to make more power than the crappy stock headers/y-pipe..

I'm sure this has been posted before.. but, here a 3 liter Dyno Chart with this setup..




Around 20whp... not too shabby..

Travis

 

usin StoneRacing System(headers/Ypipe). had no issues with fitment. gains re pretty good. changin y-pipe to warpspeed thou. flex pipe broke because of ripped mounts.

 

What did you have to add ?? I dont understand. Will this have to be on the maxima

Thats the same header setup that SS AutoChrome is selling, right ??

-matt

 

What did I have to add? That for the price, you can't beat what you're getting. Even if the y-pipe is doing most of the magic.. for 250.00, you can't beat it. And, I'll bet that if you put the headers and y-pipe on a VQ35 powered 4th gen, the gains would be much better.. I'll have a dyno soon enough to prove my point. A lot of people knock some of the cheaper stuff on Ebay.. Yes, some of it is junk.. but, some of the stuff on there is very nice.. Hell, The Sentra guys have more luck with the Stone Racing QR25DE header, than they do with the HotShot Header.. lol.. They make more power, and they don't crack. HS headers are made from VERY thin material.. and I question thier welding capabilities. HS used to fab my downpipes/intercooler pipes.. I had about 50% failure rate with the HS downpipes..

I guess, what I'm getting at... is that sometimes, more expensive isn't better.. and that for 250.00, you can't beat the Stone Racing deal.. Unless you're going for every last horsepower you can squeeze out of your N/A setup. If you want equal length, then, sure, spend the money and get it..

Travis

 

this thread is awesome ... I got some cattman headers sitting here in my living room .. need to get my 3.5 first !

 

And by 3.5, you mean 3.5 and 5-speed, right?

 

haaaa .. YOOOO Justin .. whats up buuuuuuuuuuuuuuuuuuuuuuuuuudy ? .. njo no 5speed swap...just a good ole 2 stage valve body for my auto .. hopefully ill be running mid 13's